PDF malware analysis — malicious · 2087118d4dd52e21

MALICIOUS

PDF

42.5 KB Created: 2020-11-04 14:51:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14

MD5: 64e54d56fca435286f8bcb24d20853a6 SHA-1: f729a0f19b7518ce3d3a285be2f686085db856f0 SHA-256: 2087118d4dd52e2183806d2e6a455ec332c7a68c3febaf9746fad8176cddc85b

94 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to a URL that appears to be a lure for downloading software. The ML classifier also strongly flagged this PDF as malicious. The embedded URL is designed to redirect users to a download page, likely for malware delivery.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 3

PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL https://gettraff.ru/aws?keyword=scribblenauts+unlimited+apk+free+download In PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/e1641c4d-ec50-47fd-b151-f0facb953085/56922691342.pdfIn PDF document text
- https://s3.amazonaws.com/warapagefasovi/82386601363.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/510e58f9-9228-4cdf-b894-412b0429226f/xinasesokepexesugikuwa.pdfIn PDF document text
- https://s3.amazonaws.com/sixenogafopoj/dead_effect_2_hack_tool_apk.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/77c54cdc-0180-497c-a425-cec1cc43e2ea/james_hadley_chase_books_in_hindi_pd.pdfIn PDF document text
- https://s3.amazonaws.com/kulinisokakewi/lg_lcrt2010st_dimensions.pdfIn PDF document text
- https://s3.amazonaws.com/vaxebisapesi/86650579267.pdfIn PDF document text
- https://s3.amazonaws.com/tuxenipup/41563885389.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3b07e75a-826b-4c69-bb25-fc555e865381/33259411978.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/fc0398a8-44ce-4a2f-ab5b-67e372043921/xefafitejimiriwike.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000065db.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x65DB	5700 bytes
SHA-256: `ed5af99bb79a324d69659d7fcbc30109e34b4b1f4d57b42deebd50c4ddafb4c3`
`font_01_sfnt_off00007938.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7938	10664 bytes
SHA-256: `2b3baf7462f02484c2bb0558da10062a285c62511f767ab7177f4bdd6317d9e3`

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